Characterization of fibrillated celluloses. A short review and evaluation of characteristics with a combination of methods

Heli Kangas (Corresponding Author), Panu Lahtinen, Asko Sneck, Erkki Hellén, A-M Saariaho, O Laitinen

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    The most important properties of fibrillated celluloses and the state-of-the-art methods for their characterization are discussed on the basis of literature review and our collective experience on the material. Five mechanically manufactured fibrillated celluloses were analysed with a combination of methods, revealing information on their morphology, rheological properties, average size and size distribution and amount of the true nano-sized material. The results showed that the studied samples differed greatly in their properties. The phenomena behind their behaviour proved to be complex, and any single characterization method cannot be used to describe their properties and behaviour. Instead, a combination of different methods based on different measuring principles must be applied. Based on the results, a basic characterization package can now be recommended for chemically un-modified fibrillated celluloses, including shear viscosity and transmittance measurements, as well as evaluation of appearance, morphology and fibril size by optical and electron microscopy
    Original languageEnglish
    Pages (from-to)129-143
    Number of pages15
    JournalNordic Pulp and Paper Research Journal
    Volume29
    Issue number1
    DOIs
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Cellulose microfibrils (CMF)
    • Cellulose nanofibrils (CNF)
    • characterization
    • microscopy
    • low shear viscosity
    • transmittance

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